Breadcrumb Home > Thesaurus > P Synonyms of petabit Find synonyms for: Noun1. petabit, Pbit, Pb, computer memory unitusage: a unit of information equal to 1000 terabits or 10^15 bitsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language